MOLECULE

Xanthosine

Xanthosine, also known as xanthine riboside, belongs to the class of organic compounds known as purine nucleosides. Purine nucleosides are compounds comprising a purine base attached to a ribosyl or deoxyribosyl moiety. Xanthosine is an extremely weak basic (essentially neutral) compound (based on its pKa). Xanthosine exists in all living species, ranging from bacteria to humans. Within humans, xanthosine participates in a number of enzymatic reactions. In particular, xanthosine can be biosynthesized from xanthylic acid through the action of the enzyme cytosolic purine 5'-nucleotidase. In addition, xanthosine can be converted into xanthine and ribose 1-phosphate; which is mediated by the enzyme purine nucleoside phosphorylase. A purine nucleoside in which xanthine is attached to ribofuranose via a beta-N(9)-glycosidic bond. In humans, xanthosine is involved in the metabolic disorder called the lesch-nyhan syndrome (lns) pathway. Xanthosine is expected to be in Cannabis as all living plants are known to produce and metabolize it.